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Date: Sun, 6 Jul 2014 15:03:55 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Victor Sudakov <vas@mpeks.tomsk.su>
Subject: Re: Updating and displaying CMOS clock
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On Sun, 6 Jul 2014, Victor Sudakov wrote:

> In other words, what's the FreeBSD equivalent of the Linux
> "hwclock --systohc" command?

Offhand, I don't know.  But date(1) sets both kernel and hardware 
clocks, so a hacky way to do that is

   date -v +0S

> And no, contrary to popular belief, the correction of the CMOS clock
> does not happen automatically in FreeBSD even if ntpd is running.

I'm a little surprised about that, too, although the relatively large 
adjustment in time after a reboot is an indicator.  Now that you mention 
it, anyway.